Nut-lock.



n NJ I v Patented Dct. 2|; I902. ON 81. J. M. NICHOLSON;

NUT LOCK.

pplication filed Fb. 8. 1902.

(No Model.) v

UNITED STATES PATENT OFFICE.

DOC- GLEN HORTON AND JAMES MARSHALL NICHOLSON, OF ATTALLA,

Y ALABAMA.

NUT-LOCK.

SPECIFICATION formingpart of Letters Iatent No. 71 1,704, dated October21, 1902. Application filed February 3, 1902. erial No. 92,429. (Nomodel.)

To all whom it may concern.-

Be it known that we, DOC' GLEN HORTON and JAMES MARSHALL NICHOLSON,citizens of the United States, residing at Attalla, in the county ofEtowah and State of Alabama, have invented a new and useful Nut-Lock, ofwhich the following is a specification.

This invention relates generally to nutlocks, and more particularly tothat class thereof known as thread nut-locks, the object being toprovide a cheap and simple .construction whereby a nut can be securelyfastened upon a bolt, and another object is to provide a fastening meansof such character that it can be quickly and easily removed whendesired.

With these objects in view the invention consists in the novel featuresof construction hereinafter referred to, and pointed out in the claims.

In the drawings forming part of this specification, Figure l is a viewillustrating a nutlock constructed in accordance with our invention.Fig. 2 is a sectional view of the bolt, nut, and lock. Fig. 3 is adetail sectional view of the nut. Fig. 4 is a detail perspective view ofthe serrated plate. Fig. 5 is a detail perspective View of thelocking-key. Fig. 6 is a sectional perspective illustrating the recessedor grooved portion of the nut.

In carrying out our invention we employ a nut A, which is adapted to bescrewed upon the ordinary bolt 13. This nut has a recess or groove 0produced in one side of its central bore, said groove or recess beingproduced for the purpose of receiving the ser: rated plate D, theserrations being out upon I a pitch diifering from the pitch of thethreads of the central bore. This serrated plate is preferably made inthe form of a wedge, the

narrow edge being arranged uppermost, and the locking key or wedge E isadapted to be forced between the said serrated plate and the inner Wallof the recess or groove, thereby forcing the serrations of the plateagainst the thread of the bolt and firmly locking the nut in place. Thelocking-key E has an inwardlybent end E, which is adapted to engage thethreads upon the bolt, as most clearly shown in Fig. 2, thereby holdingthe said key in position.

In operation the nut is screwed upon the bolt and the serrated plateinserted in the recess'or groove. The locking-key is then driven in,forcing the serrated plate against the threads of the bolt and securelylocking the nut in place. ,When it is desired to remove the nut, thelocking-key can be easily withdrawn, and inasmuch as the wedge action isthus relieved the nut can be easily unscrewed. made in the formof aWedge, thereby increasing the binding action of the serrated plate.

Having thus fully described our invention, what we claim as new, anddesire to secure by Letters Patent, isa 1. In a'nut-lock the combinationwith a recessed or grooved nut, of a serrated plate adapted to restwithin the said recess or groove, and the key adapted to be forcedbetween the said plate and rear wall of the groove for the purposespecified.

2. A nut-lock comprising in combination a nut having a recess or grooveat one side, a serrated plate adapted to rest in said recess or groove,the serrations of the plate being out upon a pitch differing from thepitch of the-thread of the nut, and the key adapted to be forced intothe recess at the rear of the serrated plate for the purpose described.

3. A nut-lock comprising in combination a nut having a recess'orgrooveat one side, the serrated plate adapted to rest within the groove, saidplate being wedge-shaped and having the serrations out upon the pitchdifferent from the pitch of the thread of the nut,

and the locking-key adapted to be forced into the recess behind-theserrated plate, the end of said key being bent for the purposespeci?fied.

D00 GLEN HORTON. JAMES MARSHALL NICHOLSON. Witnesses:

A. J. BENNETT, R. F. MoOoNNELL.

If desired, the locking-key can be i

